Siemens Climatix S300 HRV Application Manual page 157

Request
Response
Error
Request
Response
Error
A6V10733786_en_c
Write Single Register, FC=06
Function code
Register Address
Register Value
Function code
Register Address
Register value
Error code
Exception code
Write Multiple Register, FC=16
Function code
Starting Address
Quantity of Registers
Byte Count
Registers Value
*N=Quantity of Registers
Function code
Starting Address
Quantity of Registers
Error code
Exception code
● A block of contiguous registers is written in one step.
Quantity of registers n = 1...123.
● The requested written values are specified in the request data field.
Data is packed as 2 bytes per register, i.e. byte count = 2 x n.
● In the request message the 2 bytes of the first register (Starting Address) are
sent first.
Engineering of communicative devices
1 Byte
2 Bytes
2 Bytes
1 Byte
2 Bytes
2 Bytes
1 Byte
1 Byte
1 Byte
2 Bytes
2 Bytes
1 Byte
N* x 2 Bytes
1 Byte
2 Bytes
2 Bytes
1 Byte
1 Byte
6
Modbus slave
0x06
0x0000 to 0xFFFF
0x0000 to 0xFFFF
0x06
0x0000 to 0xFFFF
0x0000 to 0xFFFF
0x86
01 or 02 or 03 or 04
0x10
0x0000 to 0xFFFF
0x0001 to 0x007B
2 x N*
value
0x10
0x0000 to 0xFFFF
1 to 123 (0x7B)
0x90
01 or 02 or 03 or 04
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